Specifications - Laserfiche WebLink

Home Browse Search

A. PVC fittings shall be SCH 40, Type 1, and must be of domestic manufacturer. Fittings shall be identified according to pressure rating or schedule. B. Galvanized fittings shall be malleable iron screwed fittings conformed to ANSI B 16.3. 2.04 SWING JOINTS AND RISERS A. Pop-up spray heads shall be installed on flexible swing joints consisting of thick-walled poly pipe and '/2" insert elbows. B. Pop-up rotor heads shall be installed on pre-fabricated "0" ring type PVC swing joints manufactured by RainBird or approved equal. C. Shrub type spray heads and bubblers shall be installed on 1/2" SCH 40 PVC risers which shall be painted black to be less visible. 2.05 SPRINKLER HEADS A. Sprinkler heads shall be as manufactured by Toro, RainBird, or approved equal. The manufacturer shall guarantee all sprinklers and components for not less than one year from installation, warranty against all defects in normal material and workmanship. B. Shrub spray heads (Toro Series 570) 1. The sprinklers shall be capable of covering 15 feet radius at 25 PSI. The sprinkler shall consist of nozzle and body. The nozzles shall be of the spray type adjustable by means of a stainless steel screw. Nozzle delivery at maximum flow shall be such as to allow part circle patterns to be compatible in precipitation rates with full circle nozzles. 2. The body of the sprinkler shall be constructed of non-corrosive heavy duty Cycolac. A 2" long cone strainer shall be a separate part from the nozzle assembly to allow for easy flushing of the sprinkler. Maximum working pressure at the base of the sprinkler shall be 50 P.5.I. The sprinkler base shall have 1/2" I.P.5. female threads and shall be approximate 1-1/4" high. C. Pop-up Spray Heads (Toro Series 570) shall be of the fixed spray type designed for in- ground installation. The sprinkler shall be capable of covering a fifteen foot radius at 40 P.5.I. 1. The nozzle shall be comprised of one orifice at two radius ranges and shall be adjustable from full on to full off. The nozzle shall elevate four or twelve inches when in operation. Retraction shall be achieved by a heavy duty stainless steel spring. The nozzle position shall have a smooth external surface operation in a resilient guide. A riser wiper shall be included in the sprinkler for continuous operation under the pressure of sand and other foreign material. 2. Coverage shall be either full or part circle. The part circle coverage shall be available in areas of 90 degrees, 120 degrees, 180 degrees, 240 degrees, and 270 degrees. Also included shall be special configurations. Nozzle delivery shall be such as to allow part circle patterns to match full circle patterns in precipitation rates. PAGE 109 OF 130 BID No. 08-10-01